Fishing tool



. M. T. MORTON FISHING TOOL Filed Nov. 28, 1925 P. Sheets-Sheet June 8,1926. Y 1,587,790

M. T. MORTON FISHING TOOL Filed Nov. 28, 1925 2 Sheet's--Sheev 2 21M/manto@ Patented June 8, 1926.

1,587,790 hFlCE.

MARDIS T. NORTON, OF ARDMORE, OKLAHOMA.

FISHING' TGOL.

l Application led November This invention relates to new and useful improven'mnts in well tools, and particularly to tools for removing broken drills from wells.

One object of the invention is to provide a device et this character' which can be set the proper' engagement with the broken V betere being' lowered into the well.

riother object is to provide a device ot this character which includes novel means for `lforcing' the aws into firm biting?,v engagement with the broken drill, when the device has been lowered .into the well.

Another object is to provide means for holdin ,;v the gripping' jaws in proper relation to the broken drill, while the closing mechanism is being` operatedto torce the jaws into gripping' engagement with said broken dfill. l

@ther objects and advantages will be apparent from the following;` description when taken in connection with the accompanying drawing.

ln the drawing:

Figure 1 is a vertical longitudinal sectional view showing' the gripping j uws, and operating mechanism thereot, withdrawn into the shell or tube.

Figure 9. is a similar sectional view show- .ing the gripping jaws extended into position to a brolren drill.

Figure 3 is a horizontal sectional view on the line 3 3 oic Figure 2.

Fin

n re el. is a vertical longitudinal sectional view on the line r4 of Figure 2.

iteterring particularly to the accompanyingr drawing, 1l) represents a tubular member which is internally threaded at its upper nd, as'at 11, for the receptive engagement ot a drill stem, and is also internally threaded intermediate its ends, as at 12. Formed in the upper end ot the tubular member, inwardly ot' the threaded portion, is a circular rib 13, against which the upper end of the coil spring 1 4; bears. Disposed within the tubular member, and engaged with the threads 12, a, disk 15, in which are termed the openings 16 and 17, the former receiving' the rods 18 slidablv therethrorurh, while the other openings receive the bolts 19 therethrough. Enq'aged on the upper ends ot the l'solts 19, and ber-.ring` on the upper tace ol the dish 15, are the nuts 20, by means of which the said bolts may be adjusted verti* cally through the openings 17, tor a purpose which will presently appear hereinafter.

28, 1925. Serial No. 72,035.

`Each ot the bolts 19 is formed with a peripheral flange 21, adjacent its lower end, and encircling each bolt and bearing against the disl; 15, and said flange 21, is a coil spring1 22. The lower end ot the bolt is pivotallyl connecte-d with the oliset end portion 23, ot the broken drill grippingjaw member f movement of said rods, in one direction, bv

en gagement of the upper end wall of the recess with the said ring. The upper ends of the rods 18 are permanently connectd with the horizontal ring E27, said ring having' a if-shaped rib 28, onvits upper face for en ,sagement in a similarly shaped groove 29, in the lower tace o a ring 30, arranged thereabove. The other end wall of each recess 25 bears against the lower side of the disk 15, to limit the upward movement of the rods. The lower end of the coil spring lfl hears on the upper tace of the upper ringl` 30, and normally tends to urge the rings 27 and SO, `together with the rods 18 downwardly, whereby to project the gripping jaws 24% beyond the lower end of the tubular member 10, in position to engage with a broken drill in a well.

Carried by the inner face of the tubular member 1G, at a suitable distance above the ring 26, are the spring detents 31, which engage on the upper tace of the upper ring 30, upon said ring being forced downwardly by the spring 141-, and whereby said ring 30 is he'd against upward movement.

Disposed through the opposite sides of the tubular member 10, a short distance above the detente 81, and passing into openings 32 in the lower ring; Q7, are the brass pins 33, which normally hold the jaw operating mechanism withdrawn into the member 10, while the device is being lowered into the well.

The inner vertical faces of the jaws 24 are provided with biting teeth 34, which en- `rage with the broken drill, to draw the same from the well.

When the device is let down into a well, and the ends of the jaws 24 strike the bottom, the weight of the drill stem, in the upper end of the member 10, will be suinci-ent to torce the rings 27 and 30, and rods' be screwed upwardly within the member 10.

As the disk moves upwardly it engages with the nuts 20 causing said bolts to be lifted and the jaws to be swung into iirin gripping .engagement with the broken tool, in the well. The operator then withdraws the entire device from the well, together with the broken drill clamped between the jaws 24.

Then the mechanism drops downwardly in the tubular member 10, it falls below the detents 31, being urged by the spring 14, and any tendency toward resuming its upper position is prevented by the detente, which engage with the ring 30.

What is claimed is:

1. A drill fishing tool including a rotatable carrier, a member engaged within the carrier and movable longitudinally thereot upon rotation of the carrier, gripping jaws associated with said member, rangible means for temporarily retaining the jaws within the carrier, means for projecting the jaws from the carrier upon breaking of the trangible means, and means operable by said member for moving the jaws into object gripping position upon rotation of the carrier.- Y

2. A drill fishing tool including a rotatable carrier, a member engaged in the carrier and movable longitudinally thereof upon rotation of the latter, gripping jaws disposed within the carrier, means pivotally supporting the jaws and slidable through said member, :trangible means for holding the supporting means, means for projecting the supporting means to extend the jaws outwardly of the carrier upon breaking of the frangible means, and means movably connected to the jaws, slidable through said member, and engaged by said member to move the jaws `into gripping-position upon rotation ci" the carrier and movement of said member.

3, A drill fishing device including a rotatable carrier threaded internally, a disk in the carrier and engaged with the threads for mov-ement longitudinally upon rotation of the carrier, rods slidabe through the disk, jaws movably supported on the rods, and means connected with the jaws and with the disk whereby said jaws will be moved into gripping position upon rotation ot the carrier and movement of said disk.

4. A drill fishing device including a rotatable carrier threaded internally, a disk in the carrier and engaged with the threads thereof for movement longitudinally upon rotation of the carrier, rodsvslidable through the disk, gripping jaws pivotally carried by the rods, frangible means for temporarily holding the rods at a certain position within the carrier, means for projecting the gripping means beyond the carrier, means for limiting the projecting movement ot the gripping means, means for preventing returning i'novem-ent of the gripping means into theV carrier, and means connected with the gripping jaws and movable by the disk for moving the jaws into Iripping position.

In testimony whereof, I atlix my siguature.

Mannis T. MoRToN. 

